Improvement in traction-engines



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Improvement in Traction-Engines.

N0. }27,507 Patented June 4,1872.

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Improvement in Traction-Engine$.. N0. 127,507, Patentedjune 4,1872.

WITNESSES. Mal/LE4,

3Q, 15. w fiw A/ILPHOYfld/THUGRAP/l/C CO-II. X {OSBORNE'S PROCESS) O A. OLMSTED. 3Sheets--Sh y3 Improvement in Traction-Engines. N0. 127,507, Patented'june 4,1872.

' WITNESSES. mvsmon.

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IMPROVEMENT IN TRACTION-ENGINES.

Specification forming part of Letters Patent No. 127,507, dated June 4, 1872.

To all whom it may concern:

I 2 is a longitudinal vertical section of the same.

Fig. 3 is a'front-end view, and Figs. 4 and 5 are details.

This invention has relation to traction-engines, and consists in the construction and novel arrangement of the rolling tracks and propelling devices of an engine adapted to run on common roads or on ordinary ground, and designed for the purpose of conveying freight, drawing agricultural implements, &c.

Referring to the accompanying drawing, A

A represent the frame of my improved traction-engine, constructed of any desirable size and strength. B represents the rolling tracks, consisting of large metallic rings with internal toothed flanges, b. O designates the main driving-wheels, journaled to transverse shafts c. The peripheries of said wheels are constructed with teeth, engaging with those of the flanges b, the centers of said drivingwheels being located below the centers of the rolling tracks. The driving-wheels are also flanged, the flanges projecting on either side of the teethii so as to provide a groove within which the anges b will work, the object bedng to keep said tracks and driving-wheels together in their proper relations. 1) designates toothed pinions, attached to transverse shafts d, and gearing with the driving-wheels O. E represents pulley-wheels, secured to the shafts d, and constructed with either grooves or studded peripheries, to hold belts or chains, F, connecting said pulleyswith others attached to the main driving-shaft G. The pulleywheels E are of larger size than those-marked G, and above referred to, so that the speed communicated from one shaft to the other will be increased. The driving-shaft Gris actuated pose of assisting the revolution of the rolling track, as well as for the purpose of keeping them in an upright position. The outer ends of the shafts I have their bearings in hinged bars L, the outer ends of which work in brack-' Springsets M, attached to the main frame. M bearing on said bars give the rollers K their proper degree of friction, and compensate for the wear of said rollers;

The arrangement of the various pulleys and bands may be easily comprehended from the drawing. The object of said devices is to propel the engine at a desirable rate of speed, and with the expense of comparatively slight power. The pulleys and bands are, of course, arranged to turn the rolling tracks and driving-wheels, respectively, in the same direction. The pulley-wheels E may be provided with clutch-boxes c on one side, and grooved collars c on the other side. The pulleys may be then arranged to slide on their shafts, and to engage with clutch-boxes 0 on same shafts. By this means, operating-levers 6 having forked ends to grasp the grooved collars e being used, the pulleys may be thrown in and out of gear, and the machine started or stopped at will without interfering with the motion of the driving mechanism.

As will be seen, the frame A A is construct ed in two sections. The forward section A is pivoted to a bar, A extending forward from the section A so that it may be slightly turned, in order to guide the machine. A ring, 0, secured to the bottom, passes through a slot in the barA and acts as a fifth-wheel. The front part of the said ring is toothed, and engages with a pinion, P, on a vertical shaft, P, by the turning of which the guiding of the machine is accomplished. Q is a crank-arm on the upper end of said shaft.

To show the application of this traction-englue to agricultural purposes, a rotary cultivator, consisting of a studded cylinder, is represented at B. This cylinder is supported by vertically-adjustable rods S, at the rear end of the machine, and is driven by means of belts T, passing around the ends of the cylinder,

7 and around pulleys T on the adjacent shafts d.

ers K, shafts I, pulleys J K, belts J, and driving-shaft G, with the internally-toothed rings or rolling tracks B, their propelling mechanism, and the pivoted bars L, depressed by springs M, all constructed and arranged substantially as specified.

3. A traction-engine, constructed in two hinged or pivoted sections AA and provided with "the toothed fifth wheel 0, pinion P, rod P, internally-toothed rolling tracks B, driving-wheel O, pinions D, pulleys E G, and belts or chains F, substantially as specified.

In testimony that I claim the above I have hereunto subscribed my name in the presence of two witnesses.

OLIVER AUSTIN OLMSTED.

Witnesses:

B. G. DOUGHERTY, J. R. WALKER. 

